Add cross-group statistics to the importance table — add_cross_group

Classifies each variable as either "Original" or "New" and optionally appends a summary statistic (mean, sum, or max) of the opposite group. The added statistic is flagged with `is_stat = TRUE` and can be used for plotting a reference bar.

Usage

add_cross_group_stats(imp_dt, original_features, stat_type = NULL)

Arguments

imp_dt: data.table from `prepare_importance`.
original_features: Character vector of original features.
stat_type: Character string: "mean", "sum", "max", or NULL.

Value

List with `imp_original` and `imp_new` data.tables.